IBM 8486 User Guide - Page 41

Power, signal, cables, internal, drives

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Power and signal cables for internal drives The server uses cables to connect parallel IDE, Serial ATA, and SCSI devices (such as tape devices) to the power supply and to the system board. (See "System-board internal connectors" on page 14 for the location of connectors.) Review the following information before connecting power and signal cables to internal drives: v The drives that are preinstalled in the server come with power and signal cables attached. If you replace any drives, remember which cable is attached to which drive. v When you install a drive, make sure that one of the signal cable drive connectors is connected to the drive and that the connector at the other end of the signal cable is connected to the system board. v If you have only one IDE device on a cable, it must be set as a master device. v If two IDE devices are used on a single cable, one must be designated as the master device and the other as the subordinate device; otherwise, the server might not recognize some of the IDE devices. The master and subordinate designation is determined by switch or jumper settings on each IDE device. The following cables are provided: v Power cables: Four-wire power cables connect the drives to the power supply. At the end of these cables are plastic connectors that can be attached to different drives; these connectors vary in size. Use either a four-wire power cable or Serial ATA power cable with Serial ATA drives, but do not use both at the same time (use one or the other). v Signal cables: Signal cables are typically flat cables, also called ribbon cables, that connect parallel IDE, Serial ATA, SCSI, and diskette drives to the system board. Two or three types of signal cables come with the server: - IDE: The wider IDE signal cable has three connectors. One of these connectors is attached to the drive, one is a spare, and the third is attached to the primary or secondary IDE connector on the system board. The spare connector can be used to connect an additional IDE drive to the server. The CD or DVD drive is attached to an ATA 100 signal cable. ATA 100 signal cables are color-coded. The blue connector is attached to the system board. The black connector is attached to the master IDE device. The gray middle connector is attached to the subordinate IDE device. - (Optional) Diskette drive: The narrower signal cable has two connectors. One is attached to the diskette drive, and the other is connected to the connector (FDD1) on the system board. - Serial ATA (SATA): The narrower, black signal cable has two connectors. One is connected to the Serial ATA drive, and the other is attached to the connector on the system board. Each Serial ATA drive comes with a cable. If you install an additional Serial ATA drive, you will need an additional cable. If you install the optional ServeRAID-7t S-ATA controller, all SATA drives must then be connected to the ServeRAID-7t S-ATA controller instead of the system board. The controller comes with two cables. See the optional ServeRAID-7t S-ATA controller documentation for cabling instructions. - SCSI A SCSI cable connects SCSI devices to an optional SCSI controller. For more information about connecting SCSI devices, see the SCSI documentation. Chapter 2. Installing options 29

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Power
and
signal
cables
for
internal
drives
The
server
uses
cables
to
connect
parallel
IDE,
Serial
ATA,
and
SCSI
devices
(such
as
tape
devices)
to
the
power
supply
and
to
the
system
board.
(See
“System-board
internal
connectors”
on
page
14
for
the
location
of
connectors.)
Review
the
following
information
before
connecting
power
and
signal
cables
to
internal
drives:
v
The
drives
that
are
preinstalled
in
the
server
come
with
power
and
signal
cables
attached.
If
you
replace
any
drives,
remember
which
cable
is
attached
to
which
drive.
v
When
you
install
a
drive,
make
sure
that
one
of
the
signal
cable
drive
connectors
is
connected
to
the
drive
and
that
the
connector
at
the
other
end
of
the
signal
cable
is
connected
to
the
system
board.
v
If
you
have
only
one
IDE
device
on
a
cable,
it
must
be
set
as
a
master
device.
v
If
two
IDE
devices
are
used
on
a
single
cable,
one
must
be
designated
as
the
master
device
and
the
other
as
the
subordinate
device;
otherwise,
the
server
might
not
recognize
some
of
the
IDE
devices.
The
master
and
subordinate
designation
is
determined
by
switch
or
jumper
settings
on
each
IDE
device.
The
following
cables
are
provided:
v
Power
cables:
Four-wire
power
cables
connect
the
drives
to
the
power
supply.
At
the
end
of
these
cables
are
plastic
connectors
that
can
be
attached
to
different
drives;
these
connectors
vary
in
size.
Use
either
a
four-wire
power
cable
or
Serial
ATA
power
cable
with
Serial
ATA
drives,
but
do
not
use
both
at
the
same
time
(use
one
or
the
other).
v
Signal
cables:
Signal
cables
are
typically
flat
cables,
also
called
ribbon
cables,
that
connect
parallel
IDE,
Serial
ATA,
SCSI,
and
diskette
drives
to
the
system
board.
Two
or
three
types
of
signal
cables
come
with
the
server:
–
IDE:
The
wider
IDE
signal
cable
has
three
connectors.
One
of
these
connectors
is
attached
to
the
drive,
one
is
a
spare,
and
the
third
is
attached
to
the
primary
or
secondary
IDE
connector
on
the
system
board.
The
spare
connector
can
be
used
to
connect
an
additional
IDE
drive
to
the
server.
The
CD
or
DVD
drive
is
attached
to
an
ATA
100
signal
cable.
ATA
100
signal
cables
are
color-coded.
The
blue
connector
is
attached
to
the
system
board.
The
black
connector
is
attached
to
the
master
IDE
device.
The
gray
middle
connector
is
attached
to
the
subordinate
IDE
device.
–
(Optional)
Diskette
drive:
The
narrower
signal
cable
has
two
connectors.
One
is
attached
to
the
diskette
drive,
and
the
other
is
connected
to
the
connector
(FDD1)
on
the
system
board.
–
Serial
ATA
(SATA):
The
narrower,
black
signal
cable
has
two
connectors.
One
is
connected
to
the
Serial
ATA
drive,
and
the
other
is
attached
to
the
connector
on
the
system
board.
Each
Serial
ATA
drive
comes
with
a
cable.
If
you
install
an
additional
Serial
ATA
drive,
you
will
need
an
additional
cable.
If
you
install
the
optional
ServeRAID-7t
S-ATA
controller,
all
SATA
drives
must
then
be
connected
to
the
ServeRAID-7t
S-ATA
controller
instead
of
the
system
board.
The
controller
comes
with
two
cables.
See
the
optional
ServeRAID-7t
S-ATA
controller
documentation
for
cabling
instructions.
–
SCSI
A
SCSI
cable
connects
SCSI
devices
to
an
optional
SCSI
controller.
For
more
information
about
connecting
SCSI
devices,
see
the
SCSI
documentation.
Chapter
2.
Installing
options
29